funcs = [lambda: i for i in range(3)]
print(funcs[0](), funcs[-1]())

class A: pass
class B(A): pass
class C(A): pass
class D(B, C): pass
print(D.mro()[1].__name__)

d = {1: "A", True: "B", 1.0: "C"}
print(len(d), d[1])

print(any([0, "", False]))

class Model:
    val = 1
    lst = [val for _ in range(3)]

print(Model.lst)

lst = [1, 2, 3]
lst[1:2] = [4, 5, 6]
print(lst)

s = {1, 2, 3}
s.update([3, 4, [5]])
print(len(s))

d = {'a': 1}
print(d.setdefault('a', 2), d.setdefault('b', 3))

keys = ['a', 'b', 'c']
vals = [1, 2]
d = {k: v for k, v in zip(keys, vals)}
print(d)

print(isinstance(True, int))